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A vast majority of pages on my site are now too wide (the character count was fine prior to the March update). I want to go through and update them so they display properly and are not too wide.However, I am concerned, as my understanding was that changing Meta Titles is dangerous and can have a negative effect on your rankings and can cause real issues. Is this an opportunity to change my Titles all-together without any kind of penalty? Or can I only trim the end part? In summary: 1. Can I edit all of my Meta Titles without affecting my rankings? 2. If no, how do I edit them properly to fit within the proper width and not cause any issues? 3. If yes, I can go through and change all my Meta Titles to whatever extent and optimize them to reflect latest best practices? There are changes I wanted to make to all my meta titles but I've been afraid to... due to fear of rankings drops etc Any help with this would be greatly appreciated

For http://www. I am ranking for particular KW's/phrases However, when I search just http:// - I am unranked. The http://  301's to the http://www. Is this normal? Thank you